Reference: History: Oxford University Press Releases Whos Who in the Outbreak of First World War Political Map/Infographic (Free)
The Right vs Left Government - Infographic
Europe Travel Guide - Map of Europe - Map of western europe, eastern europe map, political and physical maps printable
The Histomap, from Cartographies of Time: A Visual History of the Timeline (via Brain Pickings)
map of Europe pre-World War is important to have, because after World War the maps change!